Signed up just to say, EVGA 3090 FTW3 absolutely DOES FIT in a v6.1. Had to remove the front panel controls to work it into place. Left the plastic on the top-right corner, as it would have been marred otherwise.
Fits, and the side even secures in place, no noticeable bulge. Used low profile connectors (waiting on my third, only ordered 2 as I thought I would do an XC3)
Front panel just barely fits back in place with the power button - but it does! I’ve been without internet for over 14 hours now (and terrible cell service out here) - but I have plenty of pictures, and will upload and post as soon as my internet is back up.
I honestly don’t think you could fit a bigger card in here, with everything intact. Barely a single mm to spare.
One last detail - I was using 120x15mm fans in the bottom, even with my EVGA 2080 Super XC Ultra. I removed them for my test fit, to give myself room to work with. That said, there absolutely is NOT any room for them with this card installed.
I’ll post about temps and whatnot once the internet is back up, and I can download some things to tax it a bit. I’m so glad this worked! My next stop was probably going to be a Sliger SV590, but I really like having such a small, power-dense machine. Glad it gets to stay that way!